To protect most of the electrical equipment handling low power, the types of relays used are thermocouple, electronic and bimetallic.
Description : How many types of types of relays are there?
Description : To protect most of the electrical equipment handling low power, the types of relays used are (a) thermocouple (b) electronic and bimetallic (c) both (a) and (b) (d) none of the above
Last Answer : (c) both (a) and (b)
Description : IDMT relays are used to protect the transformer against : (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage
Last Answer : IDMT relays are used to protect the transformer against : External short circuits
Last Answer : Thermal overload relays are used to protect the motor against overcurrent due to heavy loads.
Last Answer : Protective relays are devices that detect abnormal conditions in electrical circuits by measuring constantly the electrical quantities which differ during normal and abnormal conditions.
Last Answer : MOSFET have high current losses due to High on state resistance. Hence MOSFET is used for low power applications.
Last Answer : The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.
Last Answer : The single phasing relays are used for the protection of three phase motors.
Last Answer : Impedance relays are used for phase faults on long line.
Last Answer : In a low power factor wattmeter the pressure coil is connected to the load side of the current coil.
Last Answer : The primary reason for low power factor is supply system is due to installation of induction motors.